Overview
The DRV103H/2K5 from Texas Instruments is a low-side DMOS power switch designed to drive electromechanical and thermal devices. It features a pulse-width modulated (PWM) output, which helps in conserving power and reducing heat rise, thereby increasing reliability. The device is optimized for driving valves, solenoids, relays, actuators, motors, positioners, heaters, coolers, and lamps. It offers adjustable PWM, allowing fine control over the power delivered to the load, and includes externally adjustable DC-to-PWM output delay time and oscillator frequency.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Current | SO-8 Package (U) | - | 1.5 | - | A |
| Output Current | PowerPAD SO-8 Package (H) | - | 3 | - | A |
| Output Saturation Voltage, Source | IO = 1A | +0.4 | +0.6 | - | V |
| Current Limit | - | 3 | 3.5 | 4.2 | A |
| Leakage Current DMOS Output Off | VO = +32V | ±1 | - | ±10 | µA |
| Supply Voltage Range | - | +8 | - | +32 | V |
| Oscillator Frequency Range | - | 0.5 | - | 100 | kHz |
| Operating Temperature Range | - | -40 | - | +85 | °C |
| Thermal Shutdown Junction Temperature | - | - | +160 | - | °C |
Key Features
- HIGH OUTPUT DRIVE: Available in 1.5A and 3A versions.
- WIDE SUPPLY RANGE: Operates from +8V to +32V.
- DIGITALLY CONTROLLED INPUT: Compatible with standard TTL levels.
- PWM OUTPUT: Adjustable duty cycle and oscillator frequency.
- ADJUSTABLE INTERNAL OSCILLATOR: Frequency range from 500Hz to 100kHz.
- ADJUSTABLE DELAY AND DUTY CYCLE: External adjustment of DC-to-PWM output delay time and duty cycle.
- FULLY PROTECTED: Thermal and current limit shutdown with Status OK Indicator Flag.
- PACKAGES: Available in SO-8 and PowerPAD SO-8 packages.
Applications
- ELECTROMECHANICAL DRIVER: Solenoids, valves, positioners, actuators, relays, power contactor coils, heaters, lamps.
- HYDRAULIC AND PNEUMATICS SYSTEMS: Control of hydraulic and pneumatic systems.
- PART HANDLERS AND SORTERS: Automation in part handling and sorting.
- CHEMICAL PROCESSING: Control in chemical processing applications.
- ENVIRONMENTAL MONITORING AND HVAC: Environmental monitoring and HVAC control systems.
- THERMOELECTRIC COOLERS: Driving thermoelectric coolers.
- DC MOTOR SPEED CONTROLS: Speed control of DC motors.
- MEDICAL AND SCIENTIFIC ANALYZERS: Use in medical and scientific analyzers.
- FUEL INJECTOR DRIVERS: Driving fuel injectors.
Q & A
- What is the primary function of the DRV103H/2K5?
The DRV103H/2K5 is a low-side DMOS power switch designed to drive electromechanical and thermal devices using a pulse-width modulated (PWM) output.
- What are the available output current versions of the DRV103H/2K5?
The DRV103H/2K5 is available in two output current versions: 1.5A (SO-8 package) and 3A (PowerPAD SO-8 package).
- What is the operating voltage range of the DRV103H/2K5?
The DRV103H/2K5 operates from +8V to +32V.
- How is the duty cycle adjusted in the DRV103H/2K5?
The duty cycle can be adjusted using a resistor, an analog voltage, or the voltage output of a Digital-to-Analog (D/A) converter.
- What is the oscillator frequency range of the DRV103H/2K5?
The oscillator frequency can be adjusted over a range of 500Hz to 100kHz.
- What protection features does the DRV103H/2K5 have?
The DRV103H/2K5 includes thermal and current limit shutdown with a Status OK Indicator Flag.
- What are the typical applications of the DRV103H/2K5?
The DRV103H/2K5 is used in applications such as driving solenoids, valves, positioners, actuators, relays, heaters, coolers, and lamps, as well as in HVAC control, part handlers, chemical processing, environmental monitoring, and more.
- What is the thermal shutdown temperature of the DRV103H/2K5?
The DRV103H/2K5 has a thermal shutdown temperature of approximately +160°C.
- How is the delay time to PWM mode adjusted in the DRV103H/2K5?
The delay time to PWM mode can be adjusted using a capacitor connected to the Delay Adjust pin.
- What is the significance of the OK Flag in the DRV103H/2K5?
The OK Flag indicates when thermal shutdown or over-current conditions occur.
